Ketotifen Fumarate Tablets have histamine H1 receptor antagonism and inhibition of allergic reaction mediator release, and are mainly used for the treatment of allergic rhinitis and allergic bronchial asthma. This drug can be used in pediatric patients, and it is recommended that the drug be administered with the help of a guardian and in consultation with a pediatrician as prescribed by a physician. Adverse effects of ketotifen fumarate tablets are commonly associated with gastrointestinal reactions such as drowsiness, lethargy, dry mouth, nausea, and in a few patients, headache, dizziness, sluggishness, and weight gain. The contraindications of ketotifen fumarate tablets are not clear, but patients who are allergic to the ingredients contained in this drug are prohibited from driving a machine, car, boat, engaged in aerial work, sail machine work and operation of precision instruments during the period of taking the drug, prohibited from being used in conjunction with oral hypoglycemic drugs and used with caution in pregnant women. If you need to use ketotifen fumarate tablets, please follow the doctor’s instructions to standardize the treatment, not blindly use their own medicine.